a state of stupor or drowsiness.
a state of stupor or greatly reduced activity produced by a drug. Compare nitrogen narcosis.
Also called narcotism.

1685–95; < Neo-Latin < Greek nárkōsis. See narc-, -osis Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
narcosis (nɑːˈkəʊsɪs)
unconsciousness induced by narcotics or general anaesthetics

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1693, "state of unconsciousness caused by a narcotic," from Mod.L., from Gk. narkosis, from narkoun "to benumb" (see narcotic).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

narcosis nar·co·sis (när-kō'sĭs)
n. pl. nar·co·ses (-sēz)
General and nonspecific reversible depression of neuronal excitability, produced by a physical or chemical agent, usually resulting in stupor rather than in anesthesia.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Nitrogen narcosis is a danger because it impairs judgement and sensory perception.
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